Sink drain plug

Abstract

A sink drain plug is composed of a main body, a cover body, a center rod, a pull head, and an elastic wire body. The main body is fastened with a sink or lavatory. The cover body is located on the top of the main body and is provided with a hollow column extending from the underside thereof. The center rod is fitted into the hollow column such that the center rod is fastened at the bottom end thereof with the bottom end of the main body. The pull head is fastened with the top of the cover body. The elastic wire body is engaged with the center rod such that two lugs of the elastic wire body are jutted out of the center rod to urge the inside of the hollow column so as to locate securely the cover body at a level at which the main body is opened or closed.

What is claimed is: 
     
       1. A sink drain plug comprising: a main body of a hollow construction and mounted in a sink or lavatory, said main body provided in an underside thereof with a plurality of ribs and a threaded hole;   a cover body located on a top of said main body and provided with a water seal and a hollow column extending from an underside thereof, said cover body further provided with a stepped hole in communication with said hollow column;   a center rod fitted into said hollow column of said cover body and provided at a bottom end thereof with a threaded portion which is engaged with said threaded hole of said main body, said center rod further provided at a top end thereof with a stepped portion which is retained in said stepped hole of said cover body;   a pull head provided therein with a receiving cell, and in a bottom thereof with a threaded portion fastened over said stepped hole of said cover body;   said center rod provided in a midsegment thereof with two slots opposite in location to and coplanar with each other, a bracing piece located between said two slots, and an indentation located between a top end of said bracing piece and a top surface of said slots;   an elastic wire body provided at a midsegment thereof with an insertion portion retained in said indentation of said center rod such that said elastic wire body is located securely by said bracing piece, and that two ends of said elastic wire body are located in said two slots of said center rod, and further that two lugs of said two ends of said elastic wire body are jutted out of said center rod.   
     
     
       2. The sink drain plug as defined in claim 1, wherein said hollow column of said cover body is provided at a bottom end thereof with a through hole having a greater hole diameter. 
     
     
       3. The sink drain plug as defined in claim 2, wherein an inside of said hollow column and said through hole of said cover body are provided with a junction having an inverted angle. 
     
     
       4. The sink drain plug as defined in claim 1, wherein said center rod is provided with a position restricting slot located beside said slots and extending downward.